Process for vessel decontamination

Details Process for vessel decontamination Process for vessel decontamination

1992-12-30

1994-10-18

Dean, Richard O.

Cleaning and liquid contact with solids

Processes

Hollow work, internal surface treatment

134 2214, 134 2215, 134 2219, 134 10, 134 30, 134 31, 134 34, 134 11, 134 39, B08B 300, B08B 900

Patent

active

053564820

ABSTRACT:
An improved process for the decontamination of process equipment and vessels is described wherein an extractant material for the contaminant and a surfactant are vaporized, heated with steam, to condense on the internal surfaces of the vessel to trap contaminants, such as benzene, for removal from the vessel to allow safe entry for humans for inspection and maintenance.

REFERENCES:
patent: 1722211 (1929-07-01), Guardino
patent: 1891592 (1932-12-01), FitzGerald
patent: 2023496 (1935-12-01), Todd
patent: 2715594 (1955-08-01), Garrison
patent: 3084076 (1963-04-01), Loucks
patent: 4446044 (1984-05-01), Rutkiewic et al.
patent: 4511488 (1985-04-01), Matta
patent: 4790951 (1988-12-01), Frieser et al.
"Benzene Carcinogenicity," CRC Press, Inc., Boca Raton, Fla.
Oak Ridge National Laboratory, "Toxicological Profile for Benzene," (May 1989).

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